已知集合
,集合
.
(1)若全集
,求
;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c06bd1a0aa958e2a4813ea72e2ba01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e55fd6921aa85cd364a6d0fde48c48f.png)
(1)若全集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62eeab0e8060b02660c42961c073a05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d671d4ce46f03f75a328734f2acbac91.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
更新时间:2022-11-01 13:19:56
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【推荐1】已知集合
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ee9edd553df8d3f22376ad96a25523.png)
(1)若
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b29b38819aac5ef3d774b9a38bd70c4.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d318d706ca4ec954246a292293b91a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知集合
,
.
(1)当实数
在什么范围内取值时,
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(2)当实数
在什么范围内取值时,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914bfd883d2bc3c3707e8865f278df93.png)
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(1)当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
(2)当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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【推荐3】已知集合A={x| 2 < x < 4},B={x| a < x < 3a (a>0)}.
(1)若A∪B=B,求a的取值范围;
(2)若A∩B=∅,求a的取值范围.
(1)若A∪B=B,求a的取值范围;
(2)若A∩B=∅,求a的取值范围.
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【推荐1】已知全集
集合
,
,
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(1)求
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8165afd98b35ec8b7c5d5446397be4.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572510837161984/1572510842626048/STEM/de927776c008427e9eff3058c972015a.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37b983a8e0c3114a12b816796659ef6.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572510837161984/1572510842626048/STEM/220956ec5b904a1eb1312062e7879c19.png?resizew=209)
(1)求
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572510837161984/1572510842626048/STEM/97d0dafc06284aae8acedbdf806b1d7a.png?resizew=41)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d289e153bf47882d479ff22e88ffd3.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572510837161984/1572510842626048/STEM/1cd9a60e40b14eac8048ddb5de97d860.png?resizew=13)
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解题方法
【推荐2】已知集合
,全集
.
(1)当
时,求
;
(2)若
,当
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的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ca4cc84d89c3c51e16a20d16578c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b109e426e848c161a79366657ca264dc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52854d0ead4737302f4b4706e1f80553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
【推荐1】已知
.
(1)当
时,求不等式
的解集;
(2)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a034f504d448f59248c11555f036799d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
您最近一年使用:0次
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【推荐2】已知集合
,
.
(1)若
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的值;
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(1)若
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(2)若命题
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd42033dda643da24e60eabfc3cc64b.png)
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名校
【推荐3】设集合
,
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(1)若
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(2)若
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(3)若
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的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a47ac7387a3cecad68485a1c1c26b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21069c7dad6176902089271ee008697a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4afabfd5b4885311f8d9a4bcf791b71.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb171e17bd57652ac5812da5a823dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc887a6c34c3e2f859e6a59a9ed4cac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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